| Answer | Crossword Clue |
|---|---|
| isooctane | a fuel of the same octane rating |
| isooctanes | ISOOCTANE, a fuel of the same octane rating |
| alkylated | the act or process of introducing one or more alkyl groups into a compound (as to increase octane number in a motor fuel) |
| rockets | An engine operating on the same principle, providing thrust as in a jet engine but without depending on the intake of air for combustion, an oxidizer being carried on board along with the fuel |
